As of 8 a.m. Saturday, about 180 supervisors with TransLink subsidiary the Coast Mountain Bus Company (CMBC) have initiated an overtime ban amid a break in contract talks.
The union representing transit supervisors says an upcoming overtime ban could mean buses "running late or not at all," while the bus company says it expects minimal impact.
Transport workers in Northern Ireland brought the entire public network in the six counties to a halt on four separate days in the run up to Christmas.